hi, i have just downloaded the localhost joomla15 for learning to create a website, i downloaded a joomla template from another website and add the template file in joomla15 folder but when i click on preview to view the site, it says "Direct Access to this location is not allowed." and when i click on this new template in Template Manager, at the right hand side under parameter it stated in red "unwritable" why is it like this? Please advise, thanks.
Try turning on legacy mode in the configuration manager. It is off by default. Legacy mode allows the old plugins and templates to work with version 1.5
You'll also need to make sure that the folder/files in that directory are writeable if you want to edit things through the Joomla interface.